Apparatus for indicating the speed of ships.



R. STAR.

APPARATUS FOR INDICATING THB SPEED 0F SHIPS.

APPLICATION FILED APB.15, 1910.

Patented Apr. 4, 1,911.

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RICHARD STAR, OF THE UNITED STATES NAVY.

APiPARATUS FOR INDICATING THE. SPEED OF SHIPS.

Specification of Letters Patent.

Patented Apr. 4, 1911.

Application filed. April 15, 1910. Serial No. 555,672.

To (1U 'whom it may concern.

Ee it known that l, Riemann Sinin, a citizen ol? the United States, stationed on U. S. S. Georgia, have invented certain new and use't'ul Improvements in Apparatus toi' Indicating the Speed ot' Ships; and I do hereby declare the following to be a t'ull, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

)fly invention relates to improvements ,in apparatus for indicating the speed of ships,

.being a specific improvement upon my prior llatent Number 955,008, dated April 12, 1910.

. The object of the present invention is to improve upon the details ot the invention shown in my former application, and ospecially the means 'for causing a vacuum in the outlet pipe communicating with the motor.

With this and other objects in view, .my invention consists in the construction and combinations of parts as hereinafter described and claimed.

In the accompanying dra\vingli`igurc l represents, in outline, part of a ship, my invcntion'beng applied thereto. Fig. 2 is a cross-section of the motor on an enlarged scale, and Fig. 3 isan enlarged cross-section of the inlet tube.

l represents a portion of the hull ot' the ship, 2 the bridge thereof, and 3 the indicator mounted thereon, which may be of any suitable construction, this indicator beingI operated by means of a cord or wire t, leading :from the motor to the indicator. The cords, pulleys, and connections may all be cased in, it desired, but they are not so shown on the drawing.

5 represents the inlet; tube, having its lower end beveled ott' as shown at (i, and preferably set at an angle to thc bottoni ot theshipas shown in Fig. Il. ,lhis inlet tube has its upper end closed by a plug 7, to which is connected a lhandle 8, andy the tubo is arranged to slide in a larger tube9, whose lower end is fastened to the bottom ot' thc ship. The top of the tube 0 is closed by a cap 10, having packing` 11 therearoi'uu'l. and on said tube S) is mounted a slotted guide 12, the slot .in which limits the upward and downward motion of the tube. 5. Connected to the tube 9 is a branch tube '13, which leads to the motor, and the tube 5 is provided with a slot 14,'sothat when the tube 5 is forced downwardly with its lower end below the ships bottom, there will be a free passage for the water entering the lower end of the tubt` 5 into the pipe 13'. The tube 9 is also provided with an extension 15, in which is located avalve 16, operated by a handle 17, passing through a stufling box. The purpose of this valve is to close the pipe ,94 to prevent water from leaking into the'ship when the pipe 5 is drawn up. 18 represents the outlet pipe, havingr its lower end beveled, as shown at 19. This pipe and its connected parts are substantially thesame in construction as the pipe 5, except that the beveled end 19 is arranged pointing to the stern in. stead ot' to the bow, as shown in Fig. l. The tube 19 is also inclined toward the stern, as shown. This arrangement of the inlet and outlet pipes is ot considerable importance. 'lhe pipe 5 being inclined toward the bow, and also having its lower end beveled.

in the same direction, causes a strong current of water to flow into the pipe 5, and thence to the motor, while the outlet pipe 18 being inclined backwardly and having. its rear end beveled in the same direction, tends strongly to create a vacuum in the motor as the ship moves forward. In fact, the effect upon the motor by reason of the partial vacuum is almost as great as the effect on said motor by the pressure of the water entering the pipe 5.

The pipe 13 delivers into a motor casing 20, the motor and casing being constructed siibstantially iii accordance with the construction showu in my former application, Serial No. 1196,022. The motor is composed ot two pistons at right angles to each other, one being shown in full lines and the other iu dotted lines in Fig. 2, and the casing is provided with a partition, separating it into two chambers, in one of which each ot' the pistons works. Each piston comprises a central portion sliding freely in a central slot iu a revoluhle cylinder 24. In slots in this main portion are two end pieces 22, cach terminating in a pin, which bears against. a centrally located spring Q3, which tends to push thc end pieces againstI the iuterior ol' the casing. The outer ends oli' the ond pieces are rounded and over them are slipped thc filling pieces 2l, which move l'reely on the cud pieeesl 2Q and tit against u thc interior oi' thc casing, theI construction in both chambers being the saine.

As the pistons in the motor easing reor Wire l passes. 101

volve, they drive a shaft: extending upwardly through the casing, on the top of which is mounted a worin 27, gearing with a worm wheel 28, mounted on a shaft 30, mounted f in brackets 29 supported on the motor casing 20. Of course,nany other form of connectinggearing could be used. l Mounted on,v the shaft 30 is a pulley 31,.over which the cord 32, 33, and 34 represent fixed guide pulleys for this cord or Wire.

35 lrepresents a movable tightener pulley, mounted in a movable yoke and'adapted to regulate the tension of the cord 4 by means of' aweight 36 in the usual manner.

1.,They combinationV with a ship. having an upwardly'inclined bow, of an apparatus located in-saidbow for indicating the speed of the ship, including, indicating means, a motor operating said indicating means, means for admitting Water to said motor as the ship moves forwardly, including inlet and outlet pipes adapted to be pushed down through thebottom of the ship and connections between said. pipes and said motor, said inlet pipe having its receiving end beveled and said outlet pipe having its disceases charge end lbeifeled, substantially. as de scribed. j

2. V'llhe combination of a shiprhavlng an upwardly inclined bow and means for 1ndieating thespeed of the ship including an.

indicator, a motor, connections between said motor and indicator, said 'motor bein., located in the bow of' the shi inlet and outlet pipes in proximity to sai motor and adapted to be pushed outwardly and down wardly through the bottom of the bow of let pipe being provided with a beyeled dis* Icharge end, substantially as described.

in testimony whereof, I aiiix my signal ture, in presence of two witnesses.

lRICHARD STAR,

Witnesses;

JOHN LUTHY, H; C. BURNHAM. 

